Automatic safety attachment for steam-boilers



(No Model.) 0. CASE.

AUTOMATIC SAFETY ATTAUHMENT FOR STEAM BOILERS.

No. 269,827. Patented Jan. 2, 1883. Y

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U TED STATES PATENT OFFICE.

CHARLIE oAsE, OF EMLENTON, PENNSYLVANIA.

AUTOMATIC SAFETY ATTACHMENT FOR STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent No. 269,827, dated January2, 1853,

Application filed August 2, 1882. (No model.)

To all whom it may concern Be it known that I, CHARLIE (JAsE, a citizenof' the United States, residing at Emlenion, in the county of Venahgoand State of" an automatic device the fire may be shut 01f from theboiler, and thereby prevent accident; or explosion.

Figure 1 represents a boiler with my device attached thereto. 7

B is the boiler, and W the fire-box of the same, which may beconstructed for the burning of gas, wood, coal, or oil.

Where gas is used for iuel, as it most generally is in the oil regions,0 0 represents a gas-tube running into the fire-box W, and through itthe gas tobe consumed is supplied.

P is a stopcock, with a lever-handle, R.

O is the head of the'boileu, with agage-cock, G, nttachedto the boilerabove the low-water line by the tube Ff V is a connection which supportsthe brass tube E. ()n the upper end of the tube E is a connection, X,supporting the steam-cock D and the arm Y.

H is a movable arln, bent downward from the tube E, and constructed soas to be adjusted at any position on the tube E, on which it slides, bythe set-screw K. From the arm Y is abent rod or spring, L, the lower endof which, when it is sprung in toward thetubeE, catches into ahole, l,inthe bent arm H.

S is a loose ring slipped on the bent arm H, and kept thereon by thespring-rod L.'

M is a rod that is hooked into the ring S,- and, pa sing through a holein the end of the stop-cock handle R,'supports a weight, N.

' The operation of my (levice'is as follows: The parts being alladjusted as shown in the drawings, the engineer goes away for a fewmoments, leaving the engine to run alone. During his absence the watergets low in the boiler and sinks below the point where the tube F isinserted. Then the steam passes up into the tube E, heating andexpanding it. thereby lifting the connection A and arm Y. This Hits theend of the spring Lout of the hole or catch at l in the arm Hand permitsthe ring S to slip off, and the weight N drops in the position shown bythe dotted lines, and thereby closes the gascock P and puts ontthe fire.

1n boilers where wood and coal are used as a fuel the pipe 0 O can beconnected with a tank of water, and the fallingot' the weight N. wouldopen the cock P and permit of a spray of water being thrown upon thefire to deaden it.

What I claim as my invention, and desire to secure by Letters Patent, isas follows: The tube E, in combination with the arm Y, the spring L, themovable arm H, the ring S, the weight N, and the stop-cock P,constructed asdescribed, for the purposes sett'ortln CHARLIE oA'sE.

Witnesses:

WILLIAM GIBB, THos. E. DU'r oN.

